S-Type (X200) V8-4.0L (AJ28) (2001)
Service Port HVAC: Description and Operation
The high-pressure service gauge port valve is located on the A/C receiver drier manifold and tube assembly
The low pressure service gauge port valve is located on the manifold of the A/C compressor manifold and tube assembly at the A/C compressor.
Component Location
The fitting is an integral part of the refrigerant line or component.
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Special couplings are necessary for both the high side and low side service gauge ports.
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A new Schrader-type valve can be installed if the seal leaks
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Always install the A/C charging valve cap on the service gauge port valves after repairing the refrigerant system.